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verb C1 Advanced Uncommon

speculate

SPEHK-yuu-layt

Speculate (verb) means to guess or form a theory about something without having solid proof. Example: “Reporters speculated about the reasons behind the sudden resignation.”

verb
1
To guess or form a theory about something without having solid proof.
"Reporters speculated about the reasons behind the sudden resignation."
"It's pointless to speculate until we have the test results."
2
To buy or trade something risky, hoping to sell later at a profit.
"He lost his savings speculating on volatile tech stocks."

How to use speculate

Learner’s notes

In plain EnglishTo guess based on limited facts, or to take a financial risk hoping for a big payoff.

Common mistake

Don't confuse with "spectate" (to watch an event) — they look similar but are unrelated in meaning.

Easily confused with
spectate
Common pairings
speculate about speculate on the stock market speculate wildly

Word forms

speculated past tense, speculates singular

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Fill the gap

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Reporters _____ about the reasons behind the sudden resignation.

Etymology

From Latin speculārī ("to watch, observe, spy"), from specula ("a watchtower") — originally about "keeping watch," it drifted toward "forming a theory" and later "taking a financial gamble."

Origin: Latin

Related words

Rhymes for speculate

See all rhymes for speculate →

Frequently asked questions

What does “speculate” mean?

The word “speculate” means to guess or form a theory about something without having solid proof. In plain terms, to guess based on limited facts, or to take a financial risk hoping for a big payoff.

How do you pronounce “speculate”?

“Speculate” is pronounced SPEHK-yuu-layt (/ˈspɛk.jəˌleɪt/ in IPA).

How do you use “speculate” in a sentence?

Here is “speculate” used in a sentence: “Reporters speculated about the reasons behind the sudden resignation.”

What part of speech is “speculate”?

“Speculate” is a verb.

Where does the word “speculate” come from?

The word “speculate” comes from Latin. From Latin speculārī ("to watch, observe, spy"), from specula ("a watchtower") — originally about "keeping watch," it drifted toward "forming a theory" and later "taking a financial gamble.".

Is “speculate” a common word?

“Speculate” is an uncommon word in modern English, usually learned at around the C1 level.

How many meanings does “speculate” have?

“Speculate” has 2 distinct senses listed in this dictionary. The most common is: to guess or form a theory about something without having solid proof.

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Definitions: FreeDict original editorial